Dry concentrating apparatus.



A. AUDET.

I DRY CONUENTRATING APPARATUS.

APPLICATION FILED JAN.14,1913.

Patented Oct. 14, 1913.

2 SHEET SSHEET 1.

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ATTORNEY.

A. AUDET. DRY GONUENTRATING APPARATUS. APPLICATION FILED JAN.14,1913.

:L,?5 959 Patented 0013.14, 1913.

2 SHEETSSHEET 2.

AT 'EGRNEY carton.

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newness.

Specification of Letters Eatent.

nan ooncgnn'rna'rma arranarus.

Patented @et. 14, 1911.30

Application filed January it, 1913. Serial Ito. 748,957. 7

To all'wham it may concern:

Be it known that I, A THUR Armin, a citizen of the United States of America, residing at Los Angeles, in the county of Los Angeles, State of California, have invented a certain new and useful Dry Concentrating Apparatus; and I do hereby declare the following to be a full, clear, and exact descri tion of the invention, such as will enab e others skilled in the art towhich it appertains to make and use the same.

This invention relates to dryconcentrating apparatus, and it ma be said to consist in the provision of the novel and advantageous features and in the novel and improved construction, arrangement, and

combination of parts and devices as will be apparent from the description and claims which follow hereinafter.

One object of the invention is to provide a novel and im roved construction for the apparatus whic permits of its bei compacted to occupy a small space, wh1c as a whole is comparatively light in weight, and

- semble which permits of the parts and devices of gnickly and easily asthe ap aratus being or demounte A. further object of the invention is to provide novel and improved apparatus of a high (1 es of adjustability which renders it availa le for working efficiently on any of the various sorts of material containing mineral values.

A further object of the invention is to rovide a novel and improvedconstruction or the rifle board which in use causes it to act to spread the material comparatively evenly thereon and thus prevents a, piling up of the material inplaces where its weight would interfere with the proper gravitational movement of the material and ore vent the concentrates from working toward the bottom of therifies; whereby the riflie board works rapidly and eficiently to accomplish improved results in crease the capacity of the apparatus.

A further object ofthe mvention' is to rovide a novel and improved rifile board swing a main channel, groups or channels in which adjacent channels are connected with each other and lead to the main channel, and comparatively lar e smooth surfacesbetween the groups of o annels; where- 'by the rifle boar is adapted to act to cause the material to spread out and move oomparatively quickly from the rcceivinggend use and'to in-.

to the delivery or discharge end of the rifile board.

Further objects of the invention are to provide novel'and im roved apparatus of the nature set forth, w ich is simple in construction, strong and durable, economical to install, maintain, and operate, and which is :dapted to produce superior results in pracice. 4

Other objects .and the advantages of the invention will be apparent to those skilled in the art from a consideration of the following description of the preferred form of construction embodyin the invention, taken in connection with t e accompanying drawings, in which- 1" Figure 1 is a perspective view of the apparatus; Fig. 2 is an enlarged partly broken and sectional view of the apparatus taken on the line 2-2 of Fig. 1; Fig. 3 is an enlarged partly broken and transverse, sectional vlew of the up er riflle board, taken on the line 3-3 of Fig. 2; Fig. 4 is an enlarged broken and sectional vlew taken on the line 4-4 of Fig. 23; Fig. 5 is an enlarged lan view of a portion of the mechanism or reciprocating the tables and screens; Fig. 6 is a sectional view taken on the line 6--6 of Fig. 5; Fig. 7 is a sectional view taken on the line 7-7 of Fig. 6; Fig. 8 is a perspective view of the upper riflle board and of the lower rifile board mounted thereon; Fig. 9 is a perspective view of the upper and lower tables and parts connected therewith; Fig. 10 is a plan view of the amalgamating pan and mounting therefor; Fig. 11 is a sectional view taken on the line 11- -11 of Fi the lower ri e board; Fig. 13 is a broken longitudinal sectional view of one of the screens; Fi 14 is a broken plan view of the same, and ig. 15 is a broken sectional view of the lower rifile board taken on the' line 1a-15 of Fig. 12.

In the several views like characters'designate similar arts.

On the pre erably rectangular base frame 16 aremounted extensible legs 17 having thereon supporting bars 18 for the table 19.

21 of the base frame 16 are preferably secured together by plates 22 secured by screws 23 to the members 20 and 21 at the junctions of the members at the corners of the base frame 16. The extensible legs 1'? consist of the rods 24 and 25 having adja- The side members 20 and the and members 10; Fig. 12 is a plan view of cent ftliereof adapted to screw into adjustablesleeves 26; the parts 24 being con sockets 29 on the plates 22. On the upper side of the supporting bars 18 are mounted runways 30 for the rollers 31 which are mounted on pivots 32 carried on brackets 33 which are suitably secured to the under side of the table 19.

In use, the legs 17 are adjusted to have the top of the table 19 inclined downwardly approximately 22 de rees from the head or receiving end A of t e table to the foot or discharge end B of the table, and also to have the top of the table inclined downwardly approximately 8 degrees from the side C to the side D thereof.

Above the top of the table 19 are mounted screens 34 whlch are arranged one below the other and are of progressively finer mesh. The screens 34 extend the full length of the table 19 and are about one-third the width of the table and are downwardly inclined approximatel 30 degrees from the head end A to the cot end .B of the table. They are suitably aflixed to the frames 35 and are each formed to provide a plurality oftransverse channels ortroughs 36 adapted to hold the larger particles of mineral valuesand they have their side portions 37 sloping or curved upwardly. The frames 35 are adjustably mounted on upwardly extending arms 38 by means of threaded pins 39 suitably fittedin slots 40 in the arms 38; thumb nuts 41 bein provided on the pins 39'for securing the rrames 35 adjustably on boards 42 and 43 is arranged the top the arms 38.

Below the screens 34 and between the side or riflie board 44 of the table 19, which riflie board has formed on the upper side thereof a series of roups of substantially arallel' transverse c annels or rifiles 45 w ich in each group are progressively increased in length. and connectedby gradually ofi'set channels 46; the longer of the channels 45 being connected witha comparatively large longitudinal channel 47 which extends along one side of the riflie board to the discharge chute 48. As seen more particularly in Fig. 8, the ritile 45 is formed to provide comparatively large smooth surfaces 49 adjacent to the channel 47 and between the groups of transverse channels 45.

In practice the construction of the riifie board 44 as above described causes the material delivered thereon to be spread out more even'ly'and moved more rapidly over the rifile board so that the material does not pileup in places and clog or interfere with the desired action whereby the heavier particles find their way to the bottom of the tonnes channels 45 and thence to the main channel 47 and to the chute 48 at the end of the main channel. In order to increase the effectiveness of therifile board 44 in operation, the

side 43 which has therein the main channel 47 diverges from the opposite side toward the foot or discharge end of the rifile board,

and, in order that mineral values may be riflie board to have the beveled side portion thereof extendin over the edges of the up vper ends of the c annels 45.

Air under ressure may be supplied to the air chest 54 y means of flexible conduit58 having one end thereof secured in the opening 56 in the air chest and having the other end thereof connected with the blower 57.

The table 19 is given a smooth and even reciprocation by the mechanism now to be described: the shaft 59 of the blower 57 has thereon a pulley 60 and a pinion 61 in mesh with a spur wheel 62 on the shaft 63 which is preferably mounted on a bearing 64 on the blower 57. The shaft 63 has fast thereon the hollow block 65 in which is slidably fitted the block 66 having thereon the wrist pin 67 and which may be secured in adjusted position in the block 65'by means of set screws 68. An extensible link 69 has one end thereof loosely mounted on the wrist pin 67 and has the other end thereof mounted on a pivot 70 carried'by a bracket 71 which latter is suitably secured to the'underside of the table 19. The length of the link 69 may be adjusted at will by having the parts 72 and 73 of the link adapted to screw into an adjustable sleeve 74.

A lower and smaller table adjustably arranged at the discharge end of the table 19; the chute 48 being adapted to pass the concentrates from the table-l9 to the table 7 5. It will be understood that one 7 5 is preferably or more screens similar to butof finer mesh than the screens 34 maybe arranged onthe smaller table 75 to catch the lar er particles of the concentrates discharge from the table 19. The table 75 is arranged to have its inclination opposite to the inclination of the table 19, and has its air chest in communication with the air chest of the table 19 through the flexible conduit 76. The

table 75 may be adjustably mounted on the table 19 by means of threaded pins 7 7 on the table 75 which pass through slots 78 in downwardly extending arms 79 which are suitably secured to the table 19; thumb nuts 80 being provided on the pins 77 to clamp the table 75 in adjusted position on the arms 79. The rifiie board 81 on the table 75 has the top thereof formed to provide spaced transverse channels 82 connected with a main longitudinal channel 83, a plurality of diagonal channels 83' connecting adjacent channels 82,and comparatively large smooth surfaces 84 adjacent to the main channel 83.

The construction, arrangement, and action of the rifile board 81 is such that when the concentrated material is delivered at the highest point on the head end E of the ritlle board, the heavier or valuable particles 'tively rapidly through the channels of the concentrated material move compara- 83, 82 and main channel 83 to the lowest oint- 86 at the foot or discharge end of t e rifile board and thence into the amalgamating pan 87the lighter or waste particles of the concentrated material moving downwardly over the surface of the riflie board and thence over the edge at the discharge end F of the rifiie board.

The amalgamating pan 87 is preferably adj ustably mounted on one end of an arm 88 which has the other end thereof mounted on a pivot 89 on the sector plate 90 which is carried by a bracket 91 suitably secured to the under side of the table 75; the arm 88 being provided with an opening whereby a pin 92 may be passed through said opening and through any one of openings 93 in the sector plate to secure the arm 88 adj ustably in position on the sector plate. The amalgamating pan 87 may be tiltably mounted on the arm 88 by means of the ball and socket joint 94:, and the set screw 95 is adapted to secure the amalgamating pan in adjusted tilted position.

While one form of construction embodying the invention has been particularly illustrated and described, there are many changes and modifications thereof that will readily occur to those skilled in the art, wherefore the right is reserved to all such changes and modifications as do not depart from the spirit and scope of the invention as defined in the appended claims.

I claim:

1. Apparatus of the class specified, comprisingv a table, means for movably mounting the table, a rifile board at the top of the table formed with a series of groups of transverse channels progressively of increased length and connected by ofiset channels, a longitudinal main channel connected with the groups of transverse channels, and

*creased length and comparatively large smooth surfaces between the groups of transverse channels, and means to reciprocate the table.

' 2. Apparatus of the class specified, comprising a table including an'air chest and an inclined riflie board at the top of the table, said riifle board formed with groups of transverse channels progressively of inconnected by offset channels, a longitudinal main channel connected with the longer of the transverse channels, comparatively large smooth surfaces between the groups of transverse channels, and openings leading from the air chest and terminating at thetop of the sides of said channels, plates aflixed on the rifile board and provided with beveled side portions extending over the top edge of the sides of said channels, means for movably mounting the table, and means to reciprocate the table.

3. In apparatus of the class specified, a ritfie board formed with a series of groups of transverse channels progressively of increased length and connected by ofiset channels, a longitudinal main channel connected with the transverse channels, comparatively large smooth surfaces between the groups of transverse channels, said rifiie board having openings therethrough terminating at the top of the sides of the channels, substantially as and for the purposes set forth.

4. Apparatus of the class specified, comprising a movably mounted table including an air chest, a riffle board mounted on the table, said riflie board formed with a series of groups of transverse channels progressively of increased length and connected by offset channels, a longitudinal main channel connected with the groups of transverse channels, comparatively large smooth surfaces between the groups of transverse channels, and openings leading from the air chest and terminating at the top of the sides of the channels, plates afiixed on the riille board and provided tending over the top edges of said channels, means for adjustably supporting the table and meansto reciprocate the table.

In testimony whereof, I have signed my name to this specification in the presence of two subscribing witnesses at Los Angeles, county'of Los Angeles, State of California, this 8th day of January A. D. 1913.

ARTHUR AUDET.

Witnesses: V

ANNA B. DEssAU,

A. H. Lmomzs.

with beveled side portions ex- 

